December weather forecast
Orient, SD

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Weather in December

The first month of the winter, December, is also a subzero cold month in Orient, South Dakota, with temperature in the range of an average high of 26.8°F (-2.9°C) and an average low of 14.9°F (-9.5°C).

Temperature

In December, the average high-temperature decreases considerably from a chilly 43.7°F (6.5°C) in November to a freezing cold 26.8°F (-2.9°C). Nightly temperatures drop to an average low of 14.9°F (-9.5°C) in December.

Humidity

In December, the average relative humidity in Orient is 83%.

Rainfall

In December, the rain falls for 2.5 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. In Orient, during the entire year, the rain falls for 97.3 days and collects up to 16.73" (425mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Orient, during December, snow falls for 10 days and regularly aggregates up to 2.4" (61mm) of snow. Throughout the year, there are 47.1 snowfall days, and 16.06" (408mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Orient, with an average of 8h and 54min of daylight.
On the first day of the month, sunrise is at 7:54 am and sunset at 4:56 pm. On the last day of December, sunrise is at 8:14 am and sunset at 5:05 pm CST.

Sunshine

In December, the average sunshine is 4.4h.

UV index

In December, the average daily maximum UV index in Orient is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

How cold is December in Orient?

The high-temperature, in December, in Orient, records 26.8°F (-2.9°C), while the low-temperature is 14.9°F (-9.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in December in Orient?

The average relative humidity in December in Orient, South Dakota, is 83%.

How many days does it rain in December in Orient?

In Orient, South Dakota, in December, during 2.5 rainfall days, 0.75" (19mm) of precipitation is typically accumulated.

How much does it snow in Orient in December?

In December, it is snowing for 10 days. Throughout December, 2.4" (61mm) of snow is accumulated.

What is the month with the shortest days in Orient?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Orient.

How many hours of daylight does Orient have in December?

In December, the average day length is 8h and 51min.

When is the sunrise / sunset in December in Orient?

On the first day of December in Orient, sunrise is at 7:54 am and sunset at 4:56 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 5:05 pm CST.

How long on average sun shines in December in Orient?

The average sunshine duration in December is 4.4h.

What is the UV index intensity in December in Orient?

The average daily maximum UV index in December in Orient, South Dakota, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Orient, SD

Average temperature in December - Orient, SD
  • Average high temperature in December: 26.8°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (23.4°F).

  • Average low temperature in December: 14.9°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).

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Average pressure in December
Orient, SD

Average pressure in December - Orient, SD
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Orient, SD

Average wind speed in December - Orient, SD
  • Average wind speed in December: 10.5mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

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Average humidity in December
Orient, SD

Average humidity in December - Orient, SD
  • Average humidity in December: 83%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (60%).

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Average rainfall in December
Orient, SD

Average rainfall in December - Orient, SD
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is July (3.07").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in December
Orient, SD

Average rainfall days in December - Orient, SD
  • Average rainfall days in December: 2.5 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (1.3 days).

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Average snowfall in December
Orient, SD

Average snowfall in December - Orient, SD
  • Average snowfall in December: 2.4"

The month with the highest snowfall is February (4.21").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Orient, SD

Average snowfall days in December - Orient, SD
  • Average snowfall days in December: 10 days

The months with the highest number of snowfall days are January and February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Orient, SD

Average daylight in December / Average sunshine in December - Orient, SD
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in December
Orient, SD

Average sunshine days in December - Orient, SD
  • Average sunshine days in December: 20 days

The month with the most sunshine days is November (22.1 days).
The month with the least sunshine days is June (12.4 days).

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Average UV index in December
Orient, SD

Average UV index in December - Orient, SD
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is February (UV index 1).

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Average cloud cover in December
Orient, SD

Average cloud cover in December - Orient, SD
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 24).

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Average visibility in December
Orient, SD

Average visibility in December - Orient, SD
  • Average visibility in December: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

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Orient, South Dakota, USA

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